Sympathy for Lady Vengeance (Chinjeolhan geumjassi; literally translated, Kind-Hearted Ms. Geum-Ja) is a 2005 South Korean film by director Park Chan-wook, and is the third installment in The Vengeance Trilogy, following Sympathy for Mr. Vengeance (2002) and Oldboy (2003).

The film debuted on July 29, 2005 in South Korea, and competed for the Golden Lion at the 62nd Venice International Film Festival in September 2005. While it failed to win in competition, it did walk away with Cinema of The Future, the Young Lion Award and the Best Innovated Film Award in the non-competition section. The film had its U.S. premiere on September 30 at the New York Film Festival. It began its limited release in North American theatres on May 5, 2006.

In the UK and North America, the film has been screened under the title Lady Vengeance.

The theme music of Lady Vengeance is an edited version of Vivaldi's "Ah ch'infelice sempre" from "Cessate, omai cessate." The song is appropriate since the unedited version's melody is sung by a woman who is seeking revenge on a man who has betrayed her, much like the movie itself. The entire soundtrack is heavily baroque-themed, featuring many pieces with harpsichord, baroque guitars, and other instruments. The soundtrack is also heavily influenced by Vivaldi's works.

(Dictated while taking a stroll) I have come to realizewhat a superbly contrived marionette man is. Though without strings attached, one can strut, jump, hop and, moreover, utter words, an elaborately made puppet! Who knows? At the Bon season next year, I may be a new dead invited to the Bon festival. What an evanescent world! This truth keeps slipping off our minds.

Great movie. Chan-Wook is indeed also a great director. I found Iīm a cyborg, but thatīs ok to be untypical for him as he says, but very lovely. For a person who has spent 10 months in an asylum, itīs a completely different experience. In this movies the asylum shines in a different light, very calming and beneficial. Todays psychiatries, at least in Germany are so depressing, thereīs nothing to do more than some steril therapies. But now Iīm talking about something completely different.

The woman behind Lady Vengeance is very beautiful and adorable. Even when she kills people thereīs nothing to blame for, and the most amusing scene is when the priest finds out where she lives and talks about returning to the christian church, and then she says: Well, for now Iīm a buddhist! And donīt forget the facial expression of the priest